Thummikkaphong, S. ., Pupaka, D. . and Deeying, S. . (2023) “Development of an Environment Learning Activities Package for Analytical Thinking Development of undergraduate students: a Case Study of Tha Kham Natural Island Mangrove Forest”, Education journal Faculty of Education, Nakhon Sawan Rajabhat University . Nakhon Sawan,Thailand, 6(3), pp. 13–24. doi: 10.2774.EDU2023.3.261226.